.box7{
    width: 100%;
    height: 500px;
    background-color: #f0f0f0;
    padding-top: 50px;
}
.box71{
    width: 80%;
    height: 100px;
    margin: auto;
    text-align: center;
    font-size: 40px;
    color: #232323;
    font-family: "黑体";
}
.box72{
    width: 100%;
    height: 300px;
    display: flex;
    justify-content: center;
}
.box721{
    width: 30%;
    height: 300px;
    text-align: right;
}
.box722{
    width: 35%;
    height: 337px;
    text-align: center;
}
.box723{
    width: 30%;
    height: 300px;
}
.box721 dt,.box723 dt{
    padding-top: 30px;
    padding-bottom: 10px;
}
.box721_dd{
    padding-bottom: 26px;
}